filesr — Returns the sample rate of a sound file.
ifilcod -- sound file to be queried
iallowraw -- (Optional) Allow raw sound files (default=1)
filesr returns the sample rate of the sound file ifilcod. filesr can return the sample rate of convolve and PVOC files if the iallowraw flag is not zero (it is non-zero by default).
Here is an example of the filesr opcode. It uses the file filesr.csd, and beats.wav.
Example 300. Example of the filesr opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o filesr.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 ;after an example from Jonathan Murphy instr 1 ;load sound into an ftable Sfile strcpy "beats.wav" ilen filelen Sfile isr filesr Sfile isamps = ilen * isr ;adjust the length of the table to be a power of two closest ;to the actual size of the sound isize init 1 loop: isize = isize * 2 if (isize < isamps) igoto loop itab ftgen 0, 0, isize, 1, Sfile, 0, 0, 0 prints "sample rate = %f, size = %f\n", isr, isize ;prints them endin </CsInstruments> <CsScore> i1 0 2 e </CsScore> </CsoundSynthesizer>
The audio file “beats.wav” was sampled at 44.1 KHz. So filesr's output should include a line like this:
sample rate = 44100.000000, size = 131072.000000